A headteacher under investigation for a string of bullying allegations has quit - despite having had her suspension lifted.

Lynne Mullen, head at Greenacres primary in Oldham, had been suspended for the past three months while a probe into a number of claims by teachers was carried out.

Allegations had also been made in relation to irregularities in the school’s SATs exam results and attendance records.

Ms Mullen has now resigned her post, the board of governors has confirmed, although her suspension has been formally lifted.

The council had never officially confirmed why she was suspended.

But the M.E.N. revealed how three members of staff had taken sick leave from the Dunkerley Street school after taking out grievances against her in relation to bullying.

She had herself also been on sick leave from the Greenacres school for a month before she was suspended in late April.

Another headteacher had been acting in her place.

The allegations were being investigated by both council officials and Unity Partnership, an arms length organisation acting on behalf of the town hall.

School bosses have confirmed no action will be taken as a result of the probe, although the grievances are still thought to be outstanding.

Howard Douglas, chair of governors at Greenacres primary school, said: “Following an extensive investigation, we can now confirm that Lynne Mullen’s suspension has been lifted and no disciplinary sanctions have been brought against her.

“Lynne has however taken the decision to move on from her position as headteacher of the school with effect from August 31, 2014.

“She has reached her decision in the hope that it will limit any further distractions to the education of children at the school.

“We will make no further public comment on these matters so that the school community can focus on the next academic year.”

Ms Mullen had headed up the school since 2010, having previously been in charge at a primary in Padgate, Warrington.

Ofsted had praised her for raising standards at their last inspection in January.